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Publication numberUS828930 A
Publication typeGrant
Publication dateAug 21, 1906
Filing dateAug 10, 1905
Priority dateAug 10, 1905
Publication numberUS 828930 A, US 828930A, US-A-828930, US828930 A, US828930A
InventorsJeremiah Crampton
Original AssigneeJeremiah Crampton
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 828930 A
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Description  (OCR text may contain errors)

No, 828,930. I PATENTED AUG. 21, 1906.





TERS cc., wAsmNcIou, n. c.


PATENTED AUG. 21, 1906.






Patented Aug. 21, 1906.

1905. Serial No. 273,662,

To all whom it may concern:

Be it known that I, JEREMIAH CRAMPTON, mining engineer, a subject of the King of Great Britain and Ireland, residing at Durban, in the Colony of certain new and useful improvement in an interlocking and interchangeable casement or hollow block with parts therefor and method of construction for the manufacture of solid concrete or other blocks, of which the following is a specification.

My inventionrelates to and has for its object the method and form of construction of a casement or hollow block interlocking and interchangeable for the manufacture of concrete or other blocks adapted for use in the construction or erection of breakwaters, seawalls, piers, and such like works.

. The present form or configuration of a block manufactured for the above purpose is either square with smooth and bevel sides or diamond-head shaped with a concave diamond-shaped bottom.

The main rinciple of my invention is the peculiar met 0d, construction, or formation of the sides and ends of the casement or hollow block by the addition of dovetailed, partly dovetailed, or square cheeks or looks for the purpose of interlocking and fixing with ducts, grooves, or channels, and by means of certain affixed eyebolts and ports or slots, also hook attachments for bracing together to form one whole. They are preferably constructed of concrete and iron, although I do not confine myself to these materials, as any other suitable materials or combination of materials may be used in their construction. The casement or hollow block may be made by molding in frames or in any other suitable manner.

My invention may be applied in the construction of breakwaters, sea-walls, piers, and similar works and are made in the convenient form of a casement or hollow block, so as to be easily handled in setting out the desired work and interlocked and fitted together and thereafter filled up with concrete or other suitable substance from the bottom of the work to the top, so as to form one solid bolted and immovable mass.

My description and the drawings attached hereto pertain to a molded concrete casement or hollow block by way of illustration.

Natal, have invented a Referring to the accompanying drawings, which illustrate my invention, and in which similar letters indicate similar and like parts throughout, Figure 1 is a perspective view of the casement or hollow block with dovetail cheeks or looks. Fig. 2 is a plan showing the dovetail cheeks or looks with ducts, grooves, or channels. Fig. 3 is a side elevation showing the ports .or slots for the purposes of bolting. Fig. 4 represents two or more easements interlocked and in position. Fig. 5 represent the eyebolts and hook.

In all the figures where shown, Arepresents a raised beveled edge running all round the casement or block for the purpose of guiding a descending block into its place on the seat or bed B.

A is a beveled recess provided at the bottom and on the inside of the casement for the purpose of fitting over the beveled edge A and resting on the seat or bed B.

The letters C shown on the several figures represent the cheeks or locks which project from the sides and ends of the casements and which all run vertically from top to bottom of casement. These cheeks or looks are constructed as to shape either dovetail, halfdovetail, or square for the purposes of interlocking.

The letters D indicate the ducts, grooves, or channels running vertically from top to bottom. These ducts or grooves are for the purpose of protecting the eyebolts fixed in the cheeks or looks and to receive the fine concrete after the easements or blocks are bolted together.

The letters E indicate the outside of the easement forming a recess between the cheeks or looks C and running vertically for the purpose of receiving the checks or looks C affixed to a casement similarly constructed.

The ports or slots, which are vertically cut and beveled on the inside and which are in dicated by the letters F, are provided to assist in the drying of the casement and setting evenly also to fix the eyebolts as and where desired and for the passage of the hook. Eight of such ports or slots are provided on each side of the casement and four at the ends, two in each cheek O and two in each recess E.

The letters G indicate eyebolts of rod-iron.

These eyebolts are on the outsideof the side and end of the casement. or hollow block, and in the case of a standard-size casement thirty of such eyebolts areprovided', twenty of which are affixed on one side, ten in each cheek C and ten in each recess E, also ten; at the end of the easement, five of which are afiixed in the cheek C and five in the recess A like number of eyebolts are provided on the inside of the casement; twenty on the side thereof and ten at the end, which are indicated by the letter The eyebolts G and H form one piece.-

I represents a rod, eitherofirqn orsteel, one inch in diameter and five feet long-with a; hook at each end to" attach to theeye'bolts and H, respectively.

The letter J represents a orother suit able device l'etinto the inside of the ends of the easement for the purpose of suspending. the casement to place 'o'sitio'n.

Having now describe 1 the different parts and attachments of my easements of hollow blocks, I proceed to show how they are used, interlocked and bolted t gether for the pun pose of erecting a breakwater or work of a similar kind. If it is desired to erect a breakwater, sea-wall, or similar construction, the ground is leveled as well as it is possible to do so and one block or easement is pl a-eedini position. A second block is then lowered down, and in loweringthe checks or looks are intersected side of the first block in. position hali length on, so as to break joint; When on the bo'ttom,- these two blocks form a first and second line of tiers. A third block is Iowered nte No.- l, where by the raised beveled edge A and the beveled recess A it is guided ontoits seat B of the lower block. A fourth block is lowered, its checks or locks interseetingthofse of N o. 3, is guided into its place, and sea'ts on B top of No. 2, and so continued: on until: the surface of the water is reached or a sufficient number of blocks are piled on each other to give the height of with re uired. In fitting or interlocking side to side or end tojend alternate easements are used; so, that the eyebolts G fall opposite the ports slots]? for the purposes of boltingithe two easements together. When a length or line has he'encen structed as above indicated and it is desired to carry out the breakwater or-like construction farther from the shore, another set of easements are lowered into position by sliding the dovetail checks or locks of the lowering casement down. and" between the recesses E of the easement already placedin position, andby this means the easements are interlocked. When the easements are sointerlockcd, the ports or slots Fwill be immediately opposing the outer eyebolts G. The rods are thereupon placed through the to" the outer eyebolts G and are then attached to the inner eyebolts HI By such attachmen-t the two easements are bound together.

In the construction of a breakwater or other I work thecasements may be placed in differerit positions by interlocking and bolting the end of one casement to the side of another, and so on, so as to thoroughly interlock the easements to' one another in different ways, so as to form a solid and immovable mass.

lWhere the blo'cks are laid on a sandy bottom and it is desired to sink them deeper after the j tier is completed, a suction-pump is placed inside the blocks with the end on the" sandy bottom, and as thewater and sand are'pumped out the Whole tier of blocks sink or descend by their weight until the necessary depth is attained, when pumping is discontinued and the suction-pipe taken out. When the casements are placed in position and are interlocked and bolted together, they are filled up with concrete or other suitable material by using a. Remie or telescopic pipe, which is letdown to the bottom of the casements and red-from the top. When the blocksol' 68 5cments are filled up, the rods I and the bolts 5 H' are embedded and held in 2 concrete.

position by the In order that the easements may form one solid mass, the ducts or grooves D are filled up with fine strong concrete from l thebottom to the top. into the cheeks or looks on the I 'ig. 4 indicates the manner in which. the casements are interlocked in difierent positions; The cheeks or looks C, together-with the recesses E and ducts F at the sides and ends of every casement, are so constructed as to angle,- depth, width, height, and in every other essential particular so as toenable the easements to' be interlocked and bolted to: gether if placed either end to end, side to side, end: to side,- or half and half,- as. it may be de-.

- SII'ed Having now particularly described and ascertained the nature of my invention and in what manner the same is to be performed, I declare that what I claim is p,

1;. A building-block comprising a hollow bo y portion provided on its outer faces with locking members projecting outwardly from the body portion and spaced apart to form intervening locking cavities equal in width to saidprojections, said locking members and cavities being dovetailed in cross-section, said locking portions having grooves or ducts, ports or openings extending from said grooves through said body portion and also ports extending" from said cavities through said body portion, and locking means extending through said ports into said grooves and intervening cavities, substantially as described.

2. A building-block comprising a hollow body portion provided on its outer face with In testimony whereof I have signed my locking members projecting outwardly from name to this specification in the presence of the body portion of the block and spaced two subscribing witnesses.

apart to form intervening locking cavities, JEREMIAH CRAMPTON. said locking members having grooves or Witnesses: ducts, and locking means projecting into said WM. BURREE.

grooves or ducts, substantially as described. DAVID PATON.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3299599 *Mar 11, 1966Jan 24, 1967Zachar Stefan HConstruction units
US6050044 *Jul 29, 1998Apr 18, 2000Kitsilano Industries Inc.Building block
US6508041 *Oct 25, 2000Jan 21, 2003Daniel Anthony Leonard BootInterlocking concrete block
US7849654 *Dec 4, 2007Dec 14, 2010Alinco IncorporatedFlooring system
US7921618 *Jan 22, 2009Apr 12, 2011Bike Track, Inc.Modular flooring system
US8677715 *Nov 26, 2010Mar 25, 2014Tekno Design S.R.O.Building elements and building system using such elements
US20120291366 *Nov 26, 2010Nov 22, 2012Giorgio GiorioBuilding elements and building system using such elements
Cooperative ClassificationB29C31/047, E04B1/04